The word "Jakhar" comes from the apical ancestor of the clan, king Jakhbhadra.
Jakhars are considered to be the descendants of King Jakhbhadra. The historian Ram Swarup Joon has given the chronology of Virabhadra, obtained from the records of the Bards of Dholpur, in his book ‘History of the Jats’ (1938, 1967) as under:
In the branch of Puru there was ‘Sanyati’ whose son was Virabhadra. Virabhadra had four sons 1. Pon Bhadra 2. Kalhan bhadra 3. Atisur Bhadra and 4. Jakh Bhadra. Jakhhadra is the originator of Jakhar gotra. Jakhbhadra’s descendants Jakhars moved to Punjab and Kashmir
They belong to the Satwat Vansh of Kshatriyas. W. Crook in his book, Castes of Northwest provinces and Avadh, has mentioned that the king of Dwaraka had a huge bow and arrow and he proposed that whoever broke it, would be given a status above the king. The king of the Jakhar clan, Jakhbhadra tried but failed. The failure made him leave his state and settle in Bikaner, that was known as Jangladesh. There is also a mention of this by Pandit Amichand Sharma in his book Jat Varna Mimansa. The Jakhar king made his capital at Reni (modern-day Taranagar).
The Jat historian Hukum Singh Panwar (Pauria) writes that Jakhar is derived from Yaksha. This tribe Jakhar claim Jakha or Jakhu, known as Yaksha or Yakshu in Sanskrit, to be their most ancient eponymous progenitor. Hukum Singh Panwar further writes that Yakshas were one of the tribes who fought the last battle of Dasrajna War (the battle of ten kings) under the leadership of Dasa Raja named Bheda against Bharatas tribes on the banks of Yamuna. The other tribes were Ajas, Sigrus, Alinas, Pakthas, Bhalana, Sivas, and Visanin. M.L. Bhargava writes that after the defeat on the Yamuna River they migrated to the Oxus (Geek name) valley and gave the name to valley as Jaksha or Jaaksha. He opines that Budakhsis and their city Badakshan are known after the combined name of Bheda, the leader of the Yakshas and that of the latter, Bheda is also a Jat clan.
One Jakhar chieftain, Lada Singh ruled a place known as Ladan in the present-day Rohtak district in Haryana. Many Jakhar chieftains have ruled in parts of the Punjab region besides Rajasthan. In haryana they are mainly located near the district jhajjar.They have 32 villages in this district,majorily Salhawas,Ladan,Dhaniya,Bhurawas etc.
In the Shekhawati region of Rajasthan, the Jakhar clan are mainly landowners.